• School Mathematics
• /
• v.19 no.2
• /
• pp.319-343
• /
• 2017

In this study, we hope to reveal specialized content knowledge(SCK) and its features necessary to analyze student's errors and difficulties about the concept of irrational numbers. The instruments and interview were administered to 3 in-service mathematics teachers with various education background and teaching experiments. The results of this study are as follows. First, specialized content knowledge(SCK) were characterized by the fixation to symbolic representation like roots when they analyzed the concentration and overlooking of the representations of irrational numbers. Secondly, we observed the centralization tendency on symbolic representation and the little attention to other representations as the standard of judgment about irrational numbers. Thirdly, In-service teachers were influenced by content of students' error when they analyzed the error and difficulties of students. Lately, we confirmed that the content knowledge about the viewpoint of procept and actual infinity of irrational numbers are most important during the analyzing process.

• Journal of Music and Human Behavior
• /
• v.3 no.2
• /
• pp.29-44
• /
• 2006

Trust and understanding relationship promoted between a therapist and a client is the basic building block to successful recovery. Its importance is not only pertaining to the music therapy but also to counseling and psychological therapy. Because of its gnificance, broad spectrum of research has been conducted for quite a long time. Historically, researches have been focused on therapists or client's chological variables rather than emotional effects on each other that occur during the therapy session. Recently researchers turned their attention to emotional relationship between a therapist and a client. With recent advances in the field of music and psychological therapy, subsequent study has been conducted to investigate the role that music plays in the therapeutic relationship. For this research, eleven music therapy sessions were conducted for the adult females who are alcoholics. The first three sessions were of group therapy. Fourth to eleventh therapy session was done individually. Throughout the research case-by-case study has been conducted on the basis of the analysis of video and audio taped materials. Analysis depends heavily on its reference from the Amir's music research of 1990, which used Ferrara's seven phases of phenomenological study. Especially, verbal and nonverbal communications were closely analyzed in musical perspective. Research revealed that music and musical instruments act as a mediator between a therapist and a client. By doing so, it protects a therapist from unnecessary negative emotional displacements of a client and creates mutual reliability between a therapist and a client. Here, research suggests that music and musical instrument play a central role in building relationship between a therapist and a client, and it indicates that it has positive effect on treatment.

• Journal of the Korea Convergence Society
• /
• v.13 no.1
• /
• pp.189-199
• /
• 2022

While modern illustration designs require originality, the shape and color of marine life provide rich materials for illustration creation. Illustration has a very high artistic creation value. Based on the knowledge of color science and visual form design, this study takes illustration design and marine biology as the main research object. The purpose of this study is: ① The typical features of Marine life are sorted by color and form. ② Lead out graphic symbols representing Marine life. ③ Combine Marine life with illustration design to make design cases. Through research, it is highlighted that the curve feature is a typical feature for distinguishing marine organisms from terrestrial organisms. The classification and comparative analysis of the color phenomena of tropical fish help to extract and process the color of marine tropical fish on the basis of understanding the color characteristics of tropical fish, and apply it to the illustration design.

• The Southeast Asian review
• /
• v.19 no.1
• /
• pp.67-111
• /
• 2009

지난여름 베트남 남부의 호치민시와 인근의 공장지대는 전례 없는 파업의 확산을 경험했다. 연구자가 만난 한국기업의 매니저들은 이를 "파업의 도미노 현상"으로 묘사했다. 호치민시 노동조합의 고위간부는 "도이머이(Doi Moi) 이후 노사관계에 가장 혼란스러운 변화가 일어나고 있다"라고 단언하기도 했다. 본 연구는 한국계 다국적 공장을 사례로 1) 최근 파업의 정치경제학적 배경은 무엇인지를 살펴본 다음, 2) 왜 어떤 공장은 최근의 파업의 소용돌이 속에서 상대적으로 안전했던 반면 다른 기업은 그렇지 못했는지, 3) 왜 어떤 공장은 파업의 과정에서 협상을 성공적으로 이끈 반면 다른 기업은 그렇지 못했는지, 4) 최근의 파업이 개별 다국적 공장의 체제에 어떤 사회적, 문화적, 정치적 영향을 미쳤는지 살펴보고자 하였다. 연구자는 연구목적을 위하여 호치민 인근과 동나이에 위치한 약 20여개의 공장을 방문하였으며 서로 다른 특징을 가지고 있는 3개의 섬유공장을 선별하여 현지연구를 실시하였다. 이 가운데 첫 번째 공장은 연구자가 90년대 말 현지연구를 실시하여 공장체제의 성격을 잘 알고 있는 다국적 공장이었다. 나머지 두 공장은 재정 상황과 정치과정의 특징이 첫 번째 공장과 대조될 뿐 아니라 서로 다른 공장이었다. 세 공장을 비교 연구함으로써 연구자는 다국적 공장의 재정적 혹은 경제적 상태가 노동쟁의의 성격을 만드는 주요한 조건이 되지만, 회사의 경제적 조건이 양호하고 경영진이 온정주의적 철학을 실천하고 있다고 해서 파업을 미연에 방지할 수 없다는 점을 보여주고자 하였다. 호치민 인근의 파업이 크게는 세계적인 경제위기, 작게는 회사의 재정상태에 영향을 받고 있지만 특정 공장에서 노동쟁의가 일어나는가의 여부는 이 공장의 정치과정과 레짐의 성격에 의해 좌우된다는 점을 밝히고자 했다. 특히 다국적 공장의 정치과정의 안정을 위해서는 '매개자' 역할을 하는 베트남 중간간부, 사무실 직원, 노조간부 등의 역할이 매우 중요하였다. 이들이 위계적으로 그리고 사회문화적으로 다른 외국인 경영진과 공장 노동자의 갈등을 어떻게 흡수하고 중재하는가에 따라 공장체제의 안정 여부가 달려 있었다. 이번 파업은 각각 다른 정치경제적 조건을 가진 여러 공장의 경영진과 노동자가 이러한 사실을 새삼 깨닫게 하는 계기로 작용했다.

• Education of Primary School Mathematics
• /
• v.27 no.1
• /
• pp.1-18
• /
• 2024

Teachers' ability to notice is a crucial indicator of their instructional expertise. Despite the significance of this ability, research in mathematics teacher education has predominantly focused on the noticing of preservice teachers, with limited exploration into the noticing abilities of experienced in-service teachers. This study addresses this gap by examining the noticing characteristics of in-service elementary teachers actively developing their competency in elementary mathematics education. For this purpose, 23 elementary school teachers were asked to complete an analysis sheet while viewing the mathematics lesson video depicting on the concept of (fraction)÷(natural number), allowing us to scrutinize their attending, interpreting, and responding skills in detail. The study's results revealed that teachers demonstrated a tendency to attend mathematically significant aspects related to the teaching of fraction division. They interpreted the observed phenomena through the lens of fraction division's instructional principles, proposing specific pedagogical alternatives. These findings offer valuable insights for mathematics teacher education research.

• Korean Journal of Social Welfare
• /
• v.39
• /
• pp.290-321
• /
• 1999

This Study has two research interests: First, to give a new perspective in searching for the identifying features of social welfare studies in Korea where social welfare is recognized as an independent discipline through an examination of german research trends in social policy, where social policy is not recognized as an independent discipline, but as a field of study. The reasons of non-recognition of social policy studies as an independent discipline in Germany are value problems, vagueness of research objects, and the position of social welfare in relation to another social sciences. Second, to show the trends of german studies in social policy from diverse disciplines, i. e. sociology, political science, law, history, pedagogics etc. and the common points in these studies. The results of this study are as follows. First, the common feature of german Studies on the social policy from diverse disciplins is above all the interest in the improvement of Lebenslage, i. e. conditions of life. Second, the value problems in social sciences are not solved till now, but the interests in the improvement of Lebenslage don't mean studies of social policy must handle with values. The interests in the applicability of social policy don't mean values must be improved in the studies either. Third, the vagueness of the objects can be found also in other social sciences and is not unique in social policy studies. Fourth, the studies, which focuses on the improvement of Lebenslage and can contribute to construct theories such as raising the effectiveness of state intervention must be recognized as studies of social policy, even though they are written by social scientists from other disciplines. This means the theories of social policy to pursue are connected with theories of middle range, i. e. with lower degree of abstraction.

• Journal of Korea Water Resources Association
• /
• v.42 no.2
• /
• pp.141-148
• /
• 2009

Each river in each country has peculiar channel characteristics at every section. Korea consists of mountains at the rate of 70%. Due to this, the sections that display unique channel form are scattered. One of the typical features is the narrow pass of channel section that presents in the process of the generation of alluvial channel and deformation channel. Around as this narrow pass of channel, it often comes to be regular flood disaster section. Regardless of this situation, investigations and plans that reflect channel characteristics at the narrow pass of channel have been wholly wanting until now. In accordance with this, we have investigated and analysed hydraulic significance and channel form of the narrow pass of channel in Seonsan in this study. The study has found real minute classification of sediment phenomenon at river bed of low flow channel on investigation section which is sand-bed river, but it was vaguely difficult to conclude that classification of sediment arises from explicit natural force. We were able to assume that the phenomenon comes from gentle bed slope, supply of river bed materials which is nearly uniformity. However, classification of sediment would come from collecting an aggregate rather than natural force. And we found that compound cross section conversion has been developing dramatically with channel form of movable bed section referring to movement which was active before at drainage district of the narrow pass of channel. With this, we could find the phenomenon that river width of low flow channel diminished largely. This kind of situation implies that it may cause compound section weighting, flood dimension decreasing, revetment at low flow channel or the local scour at bottom of levee when extraordinary flood occurs.

• The Journal of the Korea Contents Association
• /
• v.15 no.11
• /
• pp.374-385
• /
• 2015

This purpose of study is to develop a dyslexia check list for students in middle and high school. To ensure the contents validity, researching related studies was conducted, and then factors and items were made under the 5 experts advisory. The pilot test was done on 265 students who are in middle and high school. To obtain the reliability, SPSS 21,0 was conducted as exploratory factor analysis and to confirm the goodness of fit test, AMOS 7.0 was done as confirmatory factor analysis. The results of study are as below, firstly, 8 measure factors and 34 items were ensured. Secondly, in exploratory analysis, Crombach ${\alpha}=.920$ was obtained, it was high value. Thirdly. in confirmatory factor analysis, the absolute fit index : GFI=.920, RMR=.057, RMSEA=.062 and incremental fit index : CGI=.960, TLI=.977 were ensured. Above results, the developed measurement tool for students in middle and high school in this study was confirmed as a suitable one.

• Korean Journal of Social Welfare
• /
• v.68 no.4
• /
• pp.169-198
• /
• 2016

This study shows the meaning on context of social work practicum that college students have experienced. It reveals to find a essence of social work practicum based on college students through free variation. They met a "high barrier" from the beginning of social work practicum. There were "confused boundary of role as well as work". "Dilemma" has been accessed, so they felt various emotions for social work and social worker to be able to exist. "Various practice place" meant to continue as a multi-player with a weak appearance and confront for time as who he/she is. This was connected to whole life time for individually. Disclosure was as below. identity as a social worker(to be) was consisted beyond interaction between student and supervisor. Organization of social work practicum was considered when they had taken a part in. Gap must find out to be disappeared between ideal things and real things about social work practicum. Ideal type of college education for social work as well as whole education for all were needed.

• Economic and Environmental Geology
• /
• v.55 no.4
• /
• pp.339-352
• /
• 2022

As environmental criteria items are increased or strengthened, cases of heavy metal contamination by geogenic origin are increasing, and the need to distinguish between natural and anthropogenic origins in soil or groundwater exceeding the standard is increasing. In this study, geochemical occurrences of geogenic heavy metals were identified through statistical processing of the national geochemical map data and evaluation of geochemical characteristics of regions with high geoaccumulation indices. Cobalt, Cr, Cu, Ni, Pb, V, and Zn were targeted for which the national geochemical maps were prepared, and Co, Cr, Ni, and V derived from ultrabasic or ultramafic rocks were classified as factor 1. Copper, Pb and Zn of non-ferrous sulfide origin were classified as factor 2. In particular, enrichment of heavy metals by factor 1 occurs mainly in the serpentine distribution areas of the Chungcheong region, and there is a risk of contamination in neighboring areas. In the case of factor 2, geogenic occurrence is concerned not only in non-ferrous metal mineralization areas such as Taebacksan and Gyeongnam mineralization zones, but also in Au-Ag mineralization areas distributed nationwide.